BSD 4_3_Net_2 release

[unix-history] / usr / src / sbin / routed / trace / trace.c

/*-
* Copyright (c) 1983, 1988 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed by the University of
*      California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1983, 1988 The Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)trace.c     5.9 (Berkeley) 4/16/91";
#endif /* not lint */

#include <sys/param.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <protocols/routed.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct  sockaddr_in myaddr;
char    packet[MAXPACKETSIZE];

main(argc, argv)
       int argc;
       char **argv;
{
       int size, s;
       struct sockaddr from;
       struct sockaddr_in router;
       register struct rip *msg = (struct rip *)packet;
       struct hostent *hp;
       struct servent *sp;
       
       if (argc < 3) {
usage:
               printf("usage: trace cmd machines,\n");
               printf("cmd either \"on filename\", or \"off\"\n");
               exit(1);
       }
       s = socket(AF_INET, SOCK_DGRAM, 0);
       if (s < 0) {
               perror("socket");
               exit(2);
       }
       myaddr.sin_family = AF_INET;
       myaddr.sin_port = htons(IPPORT_RESERVED-1);
       if (bind(s, (struct sockaddr *)&myaddr, sizeof(myaddr)) < 0) {
               perror("bind");
               exit(2);
       }

       argv++, argc--;
       msg->rip_cmd = strcmp(*argv, "on") == 0 ?
               RIPCMD_TRACEON : RIPCMD_TRACEOFF;
       msg->rip_vers = RIPVERSION;
       argv++, argc--;
       size = sizeof (int);
       if (msg->rip_cmd == RIPCMD_TRACEON) {
               strcpy(msg->rip_tracefile, *argv);
               size += strlen(*argv);
               argv++, argc--;
       }
       if (argc == 0)
               goto usage;
       bzero((char *)&router, sizeof (router));
       router.sin_family = AF_INET;
       sp = getservbyname("router", "udp");
       if (sp == 0) {
               printf("udp/router: service unknown\n");
               exit(1);
       }
       router.sin_port = sp->s_port;
       while (argc > 0) {
               router.sin_family = AF_INET;
               router.sin_addr.s_addr = inet_addr(*argv);
               if (router.sin_addr.s_addr == -1) {
                       hp = gethostbyname(*argv);
                       if (hp == NULL) {
                               fprintf(stderr, "trace: %s: ", *argv);
                               herror((char *)NULL);
                               continue;
                       }
                       bcopy(hp->h_addr, &router.sin_addr, hp->h_length);
               }
               if (sendto(s, packet, size, 0,
                   (struct sockaddr *)&router, sizeof(router)) < 0)
                       perror(*argv);
               argv++, argc--;
       }
}